Finding the Third Proportional to 88,662 and 189,612

Step by Step Solution

1. Step 1: Write the proportion equation
   88,662 : 189,612 = 189,612 : x
2. Step 2: Convert to fraction form
   88,662/189,612 = 189,612/x
3. Step 3: Cross multiply
   88,662x = 189,612 × 189,612
4. Step 4: Simplify right side
   88,662x = 35,952,710,544
5. Step 5: Solve for x
   x = 35,952,710,544/88,662
6. Step 6: Final answer
   x = 405,503.04